Power Supply Unit (PSU)
A Power Supply Unit (PSU) converts AC (alternating current) from the wall outlet into regulated DC (direct current) voltages required by computer components. It distributes power to the motherboard, CPU, GPU, drives, fans, and peripherals. The power supply unit (PSU) evolved with early electronic computers in the 1950s, standardized later with IBM PCs. 🔌 1. Key Functions 🧩 2. PSU Connectors Connector Purpose 24-pin ATX Main motherboard power 8-pin EPS (CPU) Powers CPU VRMs 6/8-pin PCIe Powers discrete GPUs SATA Power SSDs, HDDs, optical drives Molex Legacy devices, fans, accessories 12VHPWR (ATX 3.0) High-power GPUs (e.g., RTX 40 series) 📐 3. PSU Form Factors Type Description ATX Standard for desktops SFX / SFX-L Compact for small form factor builds TFX...
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